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A non-infectious unnatural and unusual r...

A non-infectious unnatural and unusual reaction of a person to any substance or condition for which he is hypersensitive is termed as

A

toxin

B

allergy

C

infection

D

immunity

Text Solution

Verified by Experts

The correct Answer is:
B
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Knowledge Check

  • For a reaction to be spontaneous at any temperature, the conditions are

    A
    `DeltaH=+ve, DeltaS=+ve`
    B
    `DeltaH=-ve, DeltaS=-ve`
    C
    `DeltaH=+ve, DeltaS=-ve`
    D
    `DeltaH=-ve, DeltaS=+ve`

  • In the reversible reaction a catalyst is the substance which

    A
    increases the rate of the forward reaction
    B
    Decreases the value of enthalpy change in the reaction
    C
    Reduces the time required for reaching the equilibrium state in the reaction.
    D
    Decreases the rate of the reverse reaction.

  • Which reaction is termed as Darzen's reaction ?

    A
    `ROH+HCl`
    B
    `ROH+PCl_(5)`
    C
    `ROH+SOCl_(2)`
    D
    ROH+PCl_(2)`

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